Add tests

Author: damusss

test/pixelarray_test.py

@@ -1020,7 +1020,6 @@ def test_iter(self):
             self.assertEqual(iterations, 5)
 
     def test_replace(self):
-        # print("replace start")
         for bpp in (8, 16, 24, 32):
             sf = pygame.Surface((10, 10), 0, bpp)
             sf.fill((255, 0, 0))
@@ -1041,10 +1040,13 @@ def test_replace(self):
             self.assertEqual(ar[3][6], oval)
             self.assertEqual(ar[8][9], oval)
             self.assertEqual(ar[9][9], oval)
-        # print("replace end")
+
+        for color in [(20, 20, 20), 10, "green", pygame.Color("blue")]:
+            sf = pygame.Surface((10, 10))
+            ar = pygame.PixelArray(sf)
+            ar.replace(color, color)
 
     def test_extract(self):
-        # print("extract start")
         for bpp in (8, 16, 24, 32):
             sf = pygame.Surface((10, 10), 0, bpp)
             sf.fill((0, 0, 255))
@@ -1070,7 +1072,11 @@ def test_extract(self):
             self.assertEqual(newar[3][6], white)
             self.assertEqual(newar[8][9], black)
             self.assertEqual(newar[9][9], black)
-        # print("extract end")
+
+        for color in [(20, 20, 20), 10, "green", pygame.Color("blue")]:
+            sf = pygame.Surface((10, 10))
+            ar = pygame.PixelArray(sf)
+            ar.extract(color)
 
     def test_2dslice_assignment(self):
         w = 2 * 5 * 8